/Engine/Plugins/Online/OnlineSubsystemUtils/Source/OnlineSubsystemUtils/Public/VoicePacketBuffer.h
This function is called when a new packet is pushed to avoid reallocating memory.
void Initialize ( const void * InBuffer, uint32 NumBytes, int64 InStartSample, [EVoipStreamDataFormat](API\Plugins\OnlineSubsystemUtils\EVoipStreamDataFormat) InFormat )